Pipe vise



O. C. COX.

PIPE VISE.

APPLICATION FILED Nov. 8, I920.

1,41 @553, Patented Mar. I922.

4 SHEETS I I.

O. C. COX.

PIPE VlSE.

APPLICATION FILED NOV. 8,1920.

1 4 1 553 Patented Mar. 28, 1922.

. 4 SHEETSSHEET 2.

O. C. COX.

PIPE VISE.

APPLICATION FILED NOV. 8, 1920.

1 A1 553, Patented Mar. 28, 1922.

4 SHtE S*SHEET 3 0. c. c0x.

PIPE VISE.

APPLICATION FILED NOV. 8,1920. 1,4165553. Patented. Mar. 28, 1922.

4 SHEETSSHEET 4- TMWTEU STATES.

ORA C. COX, 0F PHILADELPHIA, PENNSYLVANIA.

r rn vxsn Specification of Letters Patent. Patented Elam, 2g, 1922,

Application filed November 8, 1920. Serial No. 422,526. L

To all whom it may concern:

Be it known that I, ORA C. Cox, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Pipe Vises, of which the following is a specification.

My inventionrelates'to certain improvements in Vises, which are used to hold pipes during threading and cutting operations, and which can be secured to a bench, or to a post, or rail, when necessary.

One object of the invention is to provide a simple and ffective means for holding the pipe rigidly in position and which will accommodate pipes of difierent diameters.

A further object of the invention is to provide means for readily and firmly attaching the device to a post, or rail, when a bench is not accessible.

These ob ects I attain in the following manner, reference being had to the accompanying drawings, in which:

ig. 1 is a perspective view of my improved pipe vise, showing the pipe in position and the "vise secured to'a rail;

Fig. 2 is a sectional view on the line 2-2, Fi 3 ig. 3 is a sectional view on the line 33, Fig. 2, showing the visesecured to a bench;

Fig. 4 is a sectional plan view of the vise on the line 4-4:, Fig. 2;

F ig. 5 is'a sectional view through the securing means shown in Fig. 1 for attaching the vise to arail or post, and

- Figs. 6 and 7 are views illustrating modifications of certain portions of the invention.

Referring to the drawings, 1 is the base plate of the vise, which may be of any shape desired. This plate is slotted at- 2 and is perforated at 3 for the passage of lag screws, or bolts, 4, when the device is secured to a bench 5. On the under side of the base is a rib 1 which rests against the edge of the bench, or a ainst the edge of a post, or rail,

, so as to ho d the vise firmly and to give it the necessary overhang.

6, 6 are two jaws, V-shaped at the upper ends and provided with teeth, which engage the pipe when it is laid upon the jaws. The

jaws are spaced apart, as shown, and 10-.

cated between the jaws is a lug 7 which may be formed from the base, or made separate therefrom, as shown. The lug 7 has a stem, which passes through the base and is provlded with a nut 8. This lug is preferably located at the rear of the vertical center line of the vise, as shown in Fig. 2, and pivoted to the lug is an arm 9, which is forked at its outer end and is secured to a bifurcated coupling 10 by a pin 11. Attached to this pin 11 is a chain 12 of the form clearly illustrated in the drawings. The pivot pins 13 of the chain extend beyond the links 14 so as to engage the sock eted extension 15 of the base. This extension is slotted for the passage of the chain, but the pivot pins are wider than the slot so as to engage one of the series of sockets 16 in the extension, as clearly shown in Fig.- 2. By this construction, a pipe is laid on the jaws'and the chain is passed over the pipe and a pin is brought to a position in one of the sockets 16. The clamping mechanism, which I will now describe, firmly draws the chain onto the pipe and holds it rigidly on the jaws.

17 are bearings secured to the under side of the base 1. Mounted in these bearings is a pivot pin 18 on which is a screw stem 19,

his screw stem has a projection 20 at its upper end, as shown in Fig. 2, which forms a stop to limit the rearward movement of the screw when the pipe is clamped in position. The screw extends into a threaded opening 21 in a lever 22, which is pivotally connected by pins 23 to the bifurcated coupling 10. he pins, in the present instance, are carried by a ring 24:, adapted to a groove in the upper end of the lever 22, and held in position by a nut 25 adapted to a thread on the periphery of the lever. The lever 22 may be a simple lever, but, as this lever must be turned, as well as moved on the a pivot 18, I preferably hinge the lower portion 26 of the lever to the body at the pivot 27. In the present instance, the pivot 27 is adapted to a slot 28 in the body 22 of the lever. There is a pin 29 adapted to a slot 30, also in the body ofthe lever, so that, when the portion 26 of the lever is raised to move the pin 29 out of its slot 30, this portion can be turned at right angles to the is not available.

- screw 19 is adapted to a thread in the lever 22. This lever has an external thread 31 on which is the threaded ring 24 having the pin 23. The lever has an enlarged knurled portion 32 by which it can be turned, dispensing with the pivoted extension 26 of the lever. I

In Fig. 7 I have "shown another modification, in which the lever ad" is adapted to a threaded nut 24, having pins 23 'mounted on the bifurcated coupling 10. The end .of the lever 22 is rounded to form a ball and is adapted to a socket 33 in the base plate. The edges of the socket limit the movement of the lever.

. Pipe vises are usually carried by workmen and secured temporarily in position to a post, or rail, in a building, when a bench In order to fasten the vise securelyin position, a chain is used, such as illustrated in Figs. 1 and 5. This chain 34 is the same type of chain as that used in securing a pipe to the vise. On one end of the chain is a screw stem 35, which extends through an opening 36 in the base 1, on which is a nut 37 having a rounded end 38, fitting the rounded wall of the opening 36. This nut is elongated so as to form a suitable hand hold by which it can be turned. The opposite end of the chain passes into the slot 2 in the base plate and one of the projecting pins 39 rests in the hook portions 40 of the base so that, when it is desired to secure the vise to a post, or a rail, such as 5*, Figs. 1 and 5, the chain is passed around the rail in order that one of the pins may engage the hooks 40, after which the 1 nut is turned in order to draw the base firmly onto the rail and thus hold the vise securely in position.

It will be understood that the design of the parts of the vise may be varied and the bearings and other projections of the base may be formed by drop forging WltllOut' departing from the essential features of the invention.

I claim: I

1. The combination of a base; jaws on the base; an arm pivoted to the base between the jaws; a chain attached to the arm and extending over the part to be clamped to the jaws; means for engaging the chain at the opposite side of the base; and a clamp outer end of the arm and arranged to ex-- tend over the pipe to be clamped; means for engaging the free end of the chain; a

bifurcated coupling attached to the arm; a lever pivoted to the coupling; means for longitudinally adjusting the lever; and a pivot bearing for the lever at the under side of the base so that, when the chain is attached to a pipe, the lever, and .the'

coupling, can be turned on the pivot hearing in order to clamp the pipe .firmly to the jaws. I

3. The combination in a pipe vise, of a base; two jaws on the base spaced apart;

a pivot lug on the base between the jaws and located at the rear of the vertical center line of the vise; an-arm pivotally connected to the lug; a chain attached to the arm; means, on the base, for engaging the free end of the chain; a bifurcated coupling attached to the arm and to the chain; a lever pivoted to the coupling; a pivoted bearing for the lever; and means for longitudinally so as to draw the chain snugly onto the pipe when'the leveris turned to clamp the pipe firmly to the jaws. I

4. The combination in a vise, of a base; two jaws spaced apart; an arm pivoted to the base between the jaws, a chain attached to the arm and arranged to pass over the article to be secured to the jaws; means, on the base, for engaging the free end of the chain; a bifurcated coupling pivotally connected to the' arm and to the chain; a screw stem pivoted to the under side of the base; a lever having a threaded opening to receive said screw; and pins connecting the lever to the bifurcated coupling so that, when the parts are adjusted by turning the lever on its screw, the screw, and coupling,

adjusting the lever in respect .to the bearing can be moved inwards in order todraw the chain onto the pipe and hold it onto the jaws.

ORA C. COX. 

